Doors and windows communicate with the indoor and outdoor environment, and the outdoor environment affects the choice of doors and windows. China has a vast territory, and there are differences in climate and environment between the north and the south, so there are also differences in the choice of doors and windows.
The temperature in the north is low, very cold in winter, and the temperature difference between day and night is large; dry; The wind and sand are heavy, and there are often sandstorms.
The south is warm, and some places have high temperatures, such as Hainan; Typhoons often blow, especially in coastal areas; Moist; There are many mosquitoes.
According to these climatic characteristics, the doors and windows in the north and South regions focus on performance.
#Choice of northern windows#
Due to the cold climate, it is necessary to have high thermal insulation performance of doors and windows and low k value. Aluminum wood doors and windows are popular in the north, because the thermal conductivity of wood is lower than aluminum, but wood involves environmental protection issues, and the cost is high, so it has been gradually replaced by aluminum doors and windows.
The bridge breaking heat insulation window with three glass and double hollow is more heat insulated than that with double-sided single hollow glass, so the sales volume of three glass and double hollow in the north is higher than that in the south, especially in the northeast.
Broken bridge casement windows have better thermal insulation performance than ordinary sliding windows. It is suggested to use broken bridge casement windows or install two sliding windows in the north.
In order to improve the thermal insulation of the whole house, the area of windows in northern areas is smaller. It is windy and dusty in the north, so it is recommended to choose doors and windows with good sealing performance.
#Selection of south window#
The wind is strong in the south, and the coastal areas are often afflicted by typhoons, so the products must be strong in terms of wind pressure resistance. The wall thickness, frame width and thickness of aluminum profile of doors and windows should be strengthened.
There is much rain in the south, so the water tightness of doors and windows should also be good enough to prevent rain leakage. However, the humid weather in the south is unfavorable to wood, so aluminum wood doors and windows are not as popular in the South as in the north. In addition, in order to prevent rainwater from entering, it is best to choose high and low rails for the lower rail of the balcony sliding door.
There are many mosquitoes in the south, which are easy to infect diseases, so it is best to install windows with screens, such as casement windows with integrated screens.
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"Five questions and five answers" of door and window hardware accessories
The first question: we often say door and window hardware, which "Five" gold do we mean?
Answer: door and window hardware is a general term for metal and non-metal accessories on architectural doors and windows (not five accessories in the literal sense). Its function is to help doors and windows better open and close, and improve the overall performance of doors and windows (especially safety performance). According to the purpose, door and window hardware can include door locks, handles, braces, hinges, hinges, door closers, latches, anti-theft chains, inductive door opening and closing devices, etc.
Second question: in addition to meeting the physical and mechanical properties of doors and windows, what conditions should door and window hardware accessories meet?
1. Easy operation, single point control; 2. Standardization and serialization: it can enable door and window enterprises and construction companies to realize rapid installation in the production process; 3. Adjustability; 4. Strong bearing capacity; 5. High safety; 6. Widely used; 7. Strong applicability.
Third question: how to choose hardware accessories for doors and windows with good quality and performance?
1. When choosing hardware accessories, try to choose products with guaranteed quality and high brand awareness. The quality grade of hardware fittings should be consistent with the quality grade of doors and windows: the structure and shape of hardware fittings should be consistent with the profile, with coordinated and beautiful color, correct function, flexible operation and convenient installation.
2. The installation of hardware fittings should be complete, standard, reliable and accurate. After installation, the doors and windows shall have a beautiful appearance, be flexible and convenient to open, and be free from deformation, obstruction, collision, etc.
3. The exposed fasteners of hardware fittings should preferably be stainless steel products (taking the handle as an example, the surface of a good hardware handle should be soft in color, not strong in metal dazzle, and even and delicate in texture).
4. Multiple locking points should be used when closing flat doors and windows and large sliding doors and windows, otherwise the air tightness will be greatly reduced under the action of negative pressure difference; Considering the convenience of operation, it is best to use multi lock handle or driver.
Fourth question: what are the performance requirements of high-quality sliding braces?
1. Window opening and closing force: the proportion of sliding brace used for internal and external casement windows shall not be greater than 40n. Within the opening range of 0-300mm window sash, the opening and closing force of sliding brace used for external upper suspended window shall not exceed 40n.
2. Repeated opening and closing: it is a necessary experiment for windows and doors to open 25000 times. Only after 25000 times of repeated opening and closing, the opening and closing force of windows and doors should not be greater than 80N.
3. Sliding brace strength (window sash hanging weight): after the window sash is opened (or opened to the maximum position), the sliding brace is used to withstand a pressure of 1000N (equivalent to 102 kg of gravity) for five minutes. If all parts of the sliding brace are in good condition, the sliding brace of doors and windows is qualified.
Fifth question: how to maintain correctly to make the service life of door and window hardware longer?
1. Stainless steel handle and other stainless steel "hardware" can be scrubbed with brightener to increase brightness.
2. Hinges, lifting wheels, pulleys and other moving parts may reduce their function due to the adhesion of dust during long-term movement. Drop one or two drops of lubricating oil every six months to maintain smoothness.
3. Pay attention to the rotation and stretching direction of the handle, and avoid using dead force. In particular, children should be taught not to hang and sway on the door handle, which is prone to danger and may cause damage to the inner door.
